Calculate the electric potential due to a dipole whose dipole moment is 4.8 X 10-30Cm at a

Question:

Calculate the electric potential due to a dipole whose dipole moment is 4.8 X 10-30C∙m at a point 1.1 X 10-9 m away if this point is?
(a) Along the axis of the dipole nearer the positive charge;
(b) 45o above the axis but nearer the positive charge;
(c) 45o above the axis but nearer the negative charge.